Multicarrier DS/SFH-CDMA systems

Wang, Jiangzhou and Huang, Hu
(2002)
Multicarrier DS/SFH-CDMA systems.
IEEE Transactions on Vehicular Technology,
51
(5).
pp. 867-876.
ISSN 0018-9545 .
(doi:10.1109/TVT.2002.801758)
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Abstract

Multicarrier direct-sequence/slow-frequency-hopping (MC DS/SFH) code-division multiple-access (CDMA) systems are proposed, in which multiple carriers are modulated by the same DS waveform and hopped in frequency according to a random hopping pattern. The receiver dehops the received signal with the same pattern, provides RAKE receivers for each carrier, and combines the outputs with a maximal ratio combiner (MRC). The performance of the proposed system is investigated over a frequency-selective Rayleigh-fading channel and compared to that of the MC DS-CDMA systems. It is shown that for the same diversity order, the MC DS/SFH-CDMA systems are superior in reducing multiple-access interference (MAI) while preserving the good capability of narrowband interference suppression, when the system parameters are selected properly.